2177-6059 2177-6059 S2177-60592015000100051 10.2177‐6059-v40n1201501060003 Brazil 00 06 2015 00 06 2015 40 1 51 78

12 4 4 1213-225 28 101 101 1503-523 35 129 129 1241-259 28 100 100 23 80 80 136-67 16 46 46 235-74